Amazing Xylophone Created in a Forest

Can’t see the video?
What an amazing feat of design and engineering. A super long xylophone, created in the forest of Kyushu in Japan, runs down a hill and plays Bach’s Jesu, Joy of Man’s Desiring. This was an ad for NTT Docomo’s new Touch Wood phone.
Love the ad, but not too hot on the phone. Want more? Check out “the making of” below and fully appreciate the precision engineering it took to make it work.